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Concave 20 Popular Q&A
Q: How far from a concave mirror (radius 20.6 cm) must an object be ...
A: remember radius/2 is focal length. any object placed in front of the concave mirror at focus makes the image at infinity. so it must be placed at 10.3 cm from t... Read More »
Q: 3. if a 10 cm high object is place 20 cm to the left of a 8 cm fo...
A: 1. How fast does light travel inside water? Refractive index of water is 1.33. speed of vight in water = speed of light in air / μ = 3e8/1.33 = 2.26 x10^8 m. = ... Read More »
Q: A candle is placed on the principal axis of a concave mirror at a...
A: Use 1/s + 1/s' = 1/f. s = 20cm. f = +10cm (positive since the mirror is concave) 1/s'1/f - 1/s. 1/s'1/10 - 1/20 = 1/20. So, s'20cm. The distance from the image ... Read More »
Q: A concave lens is kept in contact with convex lens of focal lengt...
A: i think it is -0.06m i.e. 6cm. Read More »
Q: When it is turned on the picture gets a concave look for about 15...
A: HelloCustomer. . Thank you for asking your question on JustAnswer. Sorry to say the problem is only going to get worse. Heat is the number one enemy of electron... Read More »